Hinged apron for earth carrying scoops



y 1951 J. E. JOHNSON 2,562,193

HINGED APRON FOR EARTH CARRYING SCOOPS Filed June 17, 1947 2 Sheets-Sheet l W-fi Q I a m m Q o:

I I. m J

N N h o:

Q L Q N y R U INVENTOR.

James EZefohnaon tin ATTU R N EYE HINGED APRON FOR July 31, 1951 Filed Ju ne 17, 1947 JOHNSON EARTH CARRYING SCOOPS 2 Sheets-Sheet 2 INVENTOR. James Eflohnson/ myzmyo.

A'ITIJ RNEYS Patented July 31, 1951 UNITED STATE-5 PATENT OFFICE HINGED APRoN FOR EARTH CARRYING sooors i This invention relates to scraper wagons and more particularly to a hinged apron therefor for closing off the opening after the wagon has been loaded.

It is an object of the present invention to provide a hinged apron or closure device which when raised to the open position will provide adequate view to the operator on the tractor of the opening through which the dirt is extended into the wagon andwherein the closure can be operated by a simple device between the lowered and raised positions.

Other objects of the present invention are to provide a hinged apron orclosure element for a scraper wagon which is of simple construction, inexpensive--to manufacture and efiicientin operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawings, in

which Fig. 1 is a top plan view of a scraper wagon employing the hinged apron or closure of the present invention and connected to a tractor to be pulled behind the same.

Fig. 2 is a side elevational view of the scraper wagon and the tractor.

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 1 and looking in the direction of the arrows thereof.

Fig. 4 is a cross-sectional View similar to that shown in Fig. 3 except that the closure or hinged apron has been raised to the open position to permit the entry of dirt into the wagon as the same is pulled by the tractor.

Referring now to the figures, l represents a tractor having a hitch bar H to which the forward end of a scraper wagon I3 employing the hinge apron or closure I4 of the present invention, is connected. The tractor can be of any type and preferably has a device for placing oil or other fluid under pressure to be delivered and returned through hose couplings l5 and Hi to a hydraulic or fluid actuated device I! connected between a transverse member l8 on the forward end of the scraper wagon and the lower edge of a closure part l9 as indicated at 2|. This fluid actuator is of the double acting type. Adequate control can be provided on the tractor for effecting the actuation of the device I! for the extension of its piston rod 22 to place the closure in the load retaining position and for the retraction of the piston rod 22 whereby to raise the closure device I4.

The lower section or part IQ of the closure device is hinged as indicated at 23 to an upper part 24 of the closure element and this upper part or section 24 is in turn pivoted upon a transversely extending rod, or shaft 25 connected between sides 26 of the scraper wagon or carry-all. The hinge connection at 23 is of the piano hinge type so as to prevent the passage of dirt through the closure element between the parts [9 and 24. The bottom part I9 is guided in its rearward and forward movement by a bridle link 21 pivotally connected as indicated at 28 to the side of the scraper body. On each of the partsla and 24 there are side-extensions 29 which extend inwardly and the bridle link 21 is connected to the side extension 29 of the lower part 19.

On the bottom of the scraper body there is provided a pivotable scraper blade 3| with which the lower edge of the closure part l9 will unite when the closure part is lowered to its closed position.

As the piston rod 22 is retracted, the closure element will be lifted to the position shown in Fig. 4 and the parts [9 and 24 will be pivoted relative to one another. The bridle link 21 will control the upward movement of the lower closure part I 9 and will limit its forward movement. It will be apparent that a full view of the opening of the scraper body through which the dirt is extended, can be had. The operator while seated on the tractor can look into the mouth opening of the scraper body when the closure is raised to the position shown in Fig. 4.

The scraper wagon has supporting wheels 33 which are journalled on their side frame pieces 34. The bod is pivoted on trunnions 35 connected to the side pieces 34 and can be tilted fore and aft by fluid actuated devices 36.

Having now described my invention, I claim:

1. In a closure for a carryall having a base with a scraper blade on the leading edge and having upwardly extended sides with a frame extended beyond the said leading edge, the combination which comprises a transversely disposed shaft carried by the sides of the carryall and spaced above the base and ahead of the leading scrapping edge thereof, a transversely disposed supporting upper closure section arcuate in cross section pivotally mounted on said shaft and extended from side to side of the carryall, a transversely disposed lower closure section also arouate in cross section hinged at the upper edge thereof to the lower edge of the said upper section, links pivotally connected to the ends of the lower section and to the lower edge thereof,

3 means pivotally connecting the upper ends of said links to the sides of the carryall and at points spaced from the shaft and substantially in a horizontal plane through the shaft, an actuator arm pivotally connected to the lower edge of the said lower closure section, and means for operating the actuator arm to fold or extend the ,said closurelsectionsto, open and. closed positions,

respectively.

2. In a closure for a carryall having a base with a scraper blade on the leading edge and having upwardly extended sides with a frame extended beyond the said leading edge,-the combination which comprises a transversely disposed shaft carried by the sidesof the carryall and spaced above the base and ahead of the leading scrapping edge thereof, a transversely disposed supporting upper closure section arouate in cross section pivctally mounted on said sha taand ex .-fro sid t sid Q -t carr al at a v r ly vdistws s lQWe closure t n a .a na i .cress se tion-h n e a the ,upper edge thereof to. the lower edge of vthe said upper section, links pivotally connected to t e ds of th l we vsec i znan t h l w ed ev th eof lmean pivotally n ng the uppenendsof said links to the sides of the carryl and pointssnaq d fro the shaf vand s an ial in a hor z n a ne through the I shaft, .a piston rod pivotally connected to the lower e dge of ,the said lower closure section, and a,.hydr aulic cylinder from which the said piston rod extends whereby the piston rod actuates the cl uret framed o ten e f q t o ing and closing the carryall, vrespectively.

3.. In a clc ure far a c ry l i g a ba with a scraper blade on the leading edge and having upwardly extended sides with a frame extended beyond the said leading edge, the combination which comprises a transversely disposed shaft carried by the sides of the carryall and spaced above the base and ahead of the leadin scraping edge thereof, a transversely disposed supporting upper closure section arcuate in cross section pivotally mounted onsaid shaft and extended'from side to side of the carryalLa transversely disposed lower closure section also arcuate in cross section hinged at the upper edge thereof to the lower edge of the said upper sec- -;tion,-said-upper and lower closure sections having upwardly extended flanges at the ends, links pivotally connected to the ends of the lower section and to the lower edge thereof, means piv- -otally connectingthe upper ends of said links to Th ,f ll w s referenc ar o r cor ,in the file of this patent:

"UNITED STATES 'PATENII-S Number Nanrie Date 2,304,786 Armingtonetal. Dec.' 15,1942 2,411,688 Keim et'al -Nov.-'-'26,-' I 946 2,425,6 4

Zakel Aug. 12,1524? 

